function preloadImg(imgName) {
//プリロードイメージ
 for (var i = 0; i < imgName.length; i++) {
  if (document.images) (new Image()).src = imgName[i];
 }
}
//読み込み画像の設定
var mnImages = new Array("img/access_h.gif","img/contact_h.gif","img/course_h.gif","img/event_h.gif","img/info_h.gif","img/member_h.gif","img/service_h.gif","img/reservation_h.gif","img/mail_h.gif","img/blog_h.gif","img/coupon_h.gif");
//プリロードイメージの実行
preloadImg(mnImages);